Oxyfluoroniobate glasses in the ZnNbOF5-BaF2-InF3 system

• Published in: Journal of non-crystalline solids 2024-01, Vol.623, p.122691, Article 122691
• Main Authors: Ignatieva, L.N., Savchenko, N.N., Marchenko, Yu.V., Mashchenko, V.A., Adichtchev, S.V., Sarin, S.A., Galkin, K.N.
• Format: Article
• Language: English
• Subjects: Luminescence; Nanocrystallites; Oxyfluoride glasses; Structure; Thermal properties
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2023.122691

•New oxyfluoroniobate glasses were synthesized in the ZnNbOF5-BaF2-InF3 system.•The thermal properties of the obtained glasses are determined.•The structures of the glass networks in the system studied are revealed.•Glasses in the ZnNbOF5-BaF2-InF3 system show luminescence was properties.•In glasses with luminescent properties, nano-objects 9–13 nm in size were found. Glasses in the ZnNbOF5–BaF2–InF3 and ZnNbOF5-BaF2 systems were produced using the ZnNbOF5•6H2O compound. The structure, thermal and luminescent properties of the obtained glasses were studied with IR-, Raman, SAXS, luminescent spectroscopy methods, calorimetry and X-ray diffraction. The highest range of thermal stability and resistance of glass to crystallization has been established for the glass of 20ZnNbOF5–40BaF2–40InF3 composition. This value is an order of magnitude higher than in glasses of the same system, but not containing InF3. Glasses networks are formed from polyhedra of InF6, NbO2F4 and NbO3F3. For all glasses containing InF3, photoluminescence contribution which depends on the concentration of indium trifluoride in the glass was recorded. This contribution corresponds to the emission levels of 542, 573, 673, 751 nm. Luminescent properties are shown by glasses in which nanoobjects (nanoinhomogeneities) in size of 9-13 nm were detected by SAXS method.